253411621402 has 32 divisors (see below), whose sum is σ = 411658862400. Its totient is φ = 116625598848.

The previous prime is 253411621387. The next prime is 253411621499. The reversal of 253411621402 is 204126114352.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495877 + ... + 867592.

It is an arithmetic number, because the mean of its divisors is an integer number (12864339450).

Almost surely, 2^253411621402 is an apocalyptic number.

253411621402 is a deficient number, since it is larger than the sum of its proper divisors (158247240998).

253411621402 is a wasteful number, since it uses less digits than its factorization.

253411621402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363630.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 253411621402 its reverse (204126114352), we get a palindrome (457537735754).

The spelling of 253411621402 in words is "two hundred fifty-three billion, four hundred eleven million, six hundred twenty-one thousand, four hundred two".