149867465657 has 32 divisors (see below), whose sum is σ = 188954422272. Its totient is φ = 115688430144.

The previous prime is 149867465623. The next prime is 149867465719. The reversal of 149867465657 is 756564768941.

It is not a de Polignac number, because 149867465657 - 2¹⁴ = 149867449273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149867465857) 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, 3527978 + ... + 3570204.

It is an arithmetic number, because the mean of its divisors is an integer number (5904825696).

Almost surely, 2^149867465657 is an apocalyptic number.

It is an amenable number.

149867465657 is a deficient number, since it is larger than the sum of its proper divisors (39086956615).

149867465657 is a wasteful number, since it uses less digits than its factorization.

149867465657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43197.

The product of its digits is 304819200, while the sum is 68.

The spelling of 149867465657 in words is "one hundred forty-nine billion, eight hundred sixty-seven million, four hundred sixty-five thousand, six hundred fifty-seven".