1775878749372 has 192 divisors, whose sum is σ = 5239846513664. Its totient is φ = 455526789120.

The previous prime is 1775878749367. The next prime is 1775878749383. The reversal of 1775878749372 is 2739478785771.

It is a junction number, because it is equal to n+sod(n) for n = 1775878749294 and 1775878749303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 126093843 + ... + 126107925.

Almost surely, 2^{1775878749372} is an apocalyptic number.

1775878749372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1775878749372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2619923256832).

1775878749372 is an abundant number, since it is smaller than the sum of its proper divisors (3463967764292).

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

1775878749372 is a wasteful number, since it uses less digits than its factorization.

1775878749372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17268 (or 17266 counting only the distinct ones).

The product of its digits is 1161699840, while the sum is 75.

The spelling of 1775878749372 in words is "one trillion, seven hundred seventy-five billion, eight hundred seventy-eight million, seven hundred forty-nine thousand, three hundred seventy-two".