1091952365672 has 64 divisors (see below), whose sum is σ = 2406328456320. Its totient is φ = 454858530048.

The previous prime is 1091952365659. The next prime is 1091952365687. The reversal of 1091952365672 is 2765632591901.

It is a super-3 number, since 3×1091952365672³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401623 + ... + 2036774.

It is an arithmetic number, because the mean of its divisors is an integer number (37598882130).

Almost surely, 2^{1091952365672} is an apocalyptic number.

It is an amenable number.

1091952365672 is an abundant number, since it is smaller than the sum of its proper divisors (1314376090648).

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

1091952365672 is a wasteful number, since it uses less digits than its factorization.

1091952365672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438570 (or 3438566 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 1091952365672 in words is "one trillion, ninety-one billion, nine hundred fifty-two million, three hundred sixty-five thousand, six hundred seventy-two".