272402126646 has 64 divisors (see below), whose sum is σ = 618105089280. Its totient is φ = 79338683520.

The previous prime is 272402126519. The next prime is 272402126729. The reversal of 272402126646 is 646621204272.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 272402126598 and 272402126607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1721901 + ... + 1873431.

It is an arithmetic number, because the mean of its divisors is an integer number (9657892020).

Almost surely, 2^272402126646 is an apocalyptic number.

272402126646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 272402126646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309052544640).

272402126646 is an abundant number, since it is smaller than the sum of its proper divisors (345702962634).

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

272402126646 is a wasteful number, since it uses less digits than its factorization.

272402126646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152781.

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 272402126646 in words is "two hundred seventy-two billion, four hundred two million, one hundred twenty-six thousand, six hundred forty-six".