2154355311252 has 24 divisors (see below), whose sum is σ = 5028114474432. Its totient is φ = 717934806400.

The previous prime is 2154355311197. The next prime is 2154355311253. The reversal of 2154355311252 is 2521135534512.

It is a self number, because there is not a number n which added to its sum of digits gives 2154355311252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154355311253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22904949 + ... + 22998812.

It is an arithmetic number, because the mean of its divisors is an integer number (209504769768).

Almost surely, 2^{2154355311252} is an apocalyptic number.

It is an amenable number.

2154355311252 is an abundant number, since it is smaller than the sum of its proper divisors (2873759163180).

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

2154355311252 is a wasteful number, since it uses less digits than its factorization.

2154355311252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45907679 (or 45907677 counting only the distinct ones).

The product of its digits is 180000, while the sum is 39.

The spelling of 2154355311252 in words is "two trillion, one hundred fifty-four billion, three hundred fifty-five million, three hundred eleven thousand, two hundred fifty-two".