253505645662434 has 128 divisors (see below), whose sum is σ = 586132750264320. Its totient is φ = 72287220096000.

The previous prime is 253505645662427. The next prime is 253505645662459. The reversal of 253505645662434 is 434266546505352.

It is a super-2 number, since 2×253505645662434² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 551225427 + ... + 551685129.

It is an arithmetic number, because the mean of its divisors is an integer number (4579162111440).

Almost surely, 2^{253505645662434} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253505645662434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293066375132160).

253505645662434 is an abundant number, since it is smaller than the sum of its proper divisors (332627104601886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253505645662434 is a wasteful number, since it uses less digits than its factorization.

253505645662434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462696.

The product of its (nonzero) digits is 311040000, while the sum is 60.

The spelling of 253505645662434 in words is "two hundred fifty-three trillion, five hundred five billion, six hundred forty-five million, six hundred sixty-two thousand, four hundred thirty-four".