45155087491 has 2 divisors, whose sum is σ = 45155087492. Its totient is φ = 45155087490.

The previous prime is 45155087429. The next prime is 45155087567. The reversal of 45155087491 is 19478055154.

45155087491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45155087491 - 2²⁷ = 45020869763 is a prime.

It is not a weakly prime, because it can be changed into another prime (45155087891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22577543745 + 22577543746.

It is an arithmetic number, because the mean of its divisors is an integer number (22577543746).

Almost surely, 2^45155087491 is an apocalyptic number.

45155087491 is a deficient number, since it is larger than the sum of its proper divisors (1).

45155087491 is an equidigital number, since it uses as much as digits as its factorization.

45155087491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 45155087491 in words is "forty-five billion, one hundred fifty-five million, eighty-seven thousand, four hundred ninety-one".