253740154956 has 96 divisors (see below), whose sum is σ = 630308044800. Its totient is φ = 79171620864.

The previous prime is 253740154907. The next prime is 253740155003. The reversal of 253740154956 is 659451047352.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 253740154899 and 253740154908.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28670020 + ... + 28678868.

It is an arithmetic number, because the mean of its divisors is an integer number (6565708800).

Almost surely, 2^253740154956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253740154956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315154022400).

253740154956 is an abundant number, since it is smaller than the sum of its proper divisors (376567889844).

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

253740154956 is a wasteful number, since it uses less digits than its factorization.

253740154956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9623 (or 9621 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 253740154956 in words is "two hundred fifty-three billion, seven hundred forty million, one hundred fifty-four thousand, nine hundred fifty-six".