133677353257 has 16 divisors (see below), whose sum is σ = 161771765760. Its totient is φ = 107833264128.

The previous prime is 133677353239. The next prime is 133677353261. The reversal of 133677353257 is 752353776331.

It is a de Polignac number, because none of the positive numbers 2^k-133677353257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133677353207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2367448 + ... + 2423254.

It is an arithmetic number, because the mean of its divisors is an integer number (10110735360).

Almost surely, 2^133677353257 is an apocalyptic number.

133677353257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

133677353257 is a deficient number, since it is larger than the sum of its proper divisors (28094412503).

133677353257 is a wasteful number, since it uses less digits than its factorization.

133677353257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75960.

The product of its digits is 8334900, while the sum is 52.

The spelling of 133677353257 in words is "one hundred thirty-three billion, six hundred seventy-seven million, three hundred fifty-three thousand, two hundred fifty-seven".