3139253978436 has 81 divisors (see below), whose sum is σ = 8240876516509. Its totient is φ = 1046322315936.

The previous prime is 3139253978299. The next prime is 3139253978449. The reversal of 3139253978436 is 6348793529313.

The square root of 3139253978436 is 1771794.

It is a perfect power (a square), and thus also a powerful number.

3139253978436 is a `hidden beast` number, since 3 + 1 + 3 + 92 + 539 + 7 + 8 + 4 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3001868108100 + 137385870336 = 1732590^2 + 370656^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is a super-2 number, since 2×3139253978436² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 287025160 + ... + 287036096.

Almost surely, 2^{3139253978436} is an apocalyptic number.

3139253978436 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

3139253978436 is the 1771794-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3139253978436

3139253978436 is an abundant number, since it is smaller than the sum of its proper divisors (5101622538073).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3139253978436 is an frugal number, since it uses more digits than its factorization.

3139253978436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21902 (or 10942 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 63.

The spelling of 3139253978436 in words is "three trillion, one hundred thirty-nine billion, two hundred fifty-three million, nine hundred seventy-eight thousand, four hundred thirty-six".