91441257155552 has 48 divisors (see below), whose sum is σ = 183662702424432. Its totient is φ = 44799028485120.

The previous prime is 91441257155533. The next prime is 91441257155557. The reversal of 91441257155552 is 25555175214419.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91441257155557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34133678 + ... + 36714989.

It is an arithmetic number, because the mean of its divisors is an integer number (3826306300509).

Almost surely, 2^{91441257155552} is an apocalyptic number.

It is an amenable number.

91441257155552 is an abundant number, since it is smaller than the sum of its proper divisors (92221445268880).

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

91441257155552 is a wasteful number, since it uses less digits than its factorization.

91441257155552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70849491 (or 70849483 counting only the distinct ones).

The product of its digits is 12600000, while the sum is 56.

The spelling of 91441257155552 in words is "ninety-one trillion, four hundred forty-one billion, two hundred fifty-seven million, one hundred fifty-five thousand, five hundred fifty-two".