256914151501 has 6 divisors (see below), whose sum is σ = 298859319150. Its totient is φ = 220212129816.

The previous prime is 256914151471. The next prime is 256914151511. The reversal of 256914151501 is 105151419652.

It can be written as a sum of positive squares in only one way, i.e., 202545902601 + 54368248900 = 450051^2 + 233170^2 .

It is a de Polignac number, because none of the positive numbers 2^k-256914151501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256914151511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2621572926 + ... + 2621573023.

It is an arithmetic number, because the mean of its divisors is an integer number (49809886525).

Almost surely, 2^256914151501 is an apocalyptic number.

It is an amenable number.

256914151501 is a deficient number, since it is larger than the sum of its proper divisors (41945167649).

256914151501 is an equidigital number, since it uses as much as digits as its factorization.

256914151501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243145963 (or 5243145956 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 40.

The spelling of 256914151501 in words is "two hundred fifty-six billion, nine hundred fourteen million, one hundred fifty-one thousand, five hundred one".