256611453731030 has 16 divisors (see below), whose sum is σ = 471728289412800. Its totient is φ = 100460654226432.

The previous prime is 256611453730999. The next prime is 256611453731089. The reversal of 256611453731030 is 30137354116652.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272990907755 + ... + 272990908694.

It is an arithmetic number, because the mean of its divisors is an integer number (29483018088300).

Almost surely, 2^{256611453731030} is an apocalyptic number.

256611453731030 is a deficient number, since it is larger than the sum of its proper divisors (215116835681770).

256611453731030 is a wasteful number, since it uses less digits than its factorization.

256611453731030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545981816503.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 256611453731030 in words is "two hundred fifty-six trillion, six hundred eleven billion, four hundred fifty-three million, seven hundred thirty-one thousand, thirty".