397153023107487 has 32 divisors (see below), whose sum is σ = 557606227875840. Its totient is φ = 251089286098560.

The previous prime is 397153023107471. The next prime is 397153023107501. The reversal of 397153023107487 is 784701320351793.

It is not a de Polignac number, because 397153023107487 - 2⁴ = 397153023107471 is a prime.

It is a super-2 number, since 2×397153023107487² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 397153023107487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397153023107437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44638812 + ... + 52791377.

It is an arithmetic number, because the mean of its divisors is an integer number (17425194621120).

Almost surely, 2^{397153023107487} is an apocalyptic number.

397153023107487 is a deficient number, since it is larger than the sum of its proper divisors (160453204768353).

397153023107487 is a wasteful number, since it uses less digits than its factorization.

397153023107487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97431103.

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 397153023107487 in words is "three hundred ninety-seven trillion, one hundred fifty-three billion, twenty-three million, one hundred seven thousand, four hundred eighty-seven".