2157542553650 has 24 divisors (see below), whose sum is σ = 4377849982704. Its totient is φ = 784560928400.

The previous prime is 2157542553629. The next prime is 2157542553703. The reversal of 2157542553650 is 563552457512.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1961401772 + ... + 1961402871.

It is an arithmetic number, because the mean of its divisors is an integer number (182410415946).

Almost surely, 2^{2157542553650} is an apocalyptic number.

2157542553650 is an abundant number, since it is smaller than the sum of its proper divisors (2220307429054).

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

2157542553650 is a wasteful number, since it uses less digits than its factorization.

2157542553650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922804666 (or 3922804661 counting only the distinct ones).

The product of its (nonzero) digits is 6300000, while the sum is 50.

The spelling of 2157542553650 in words is "two trillion, one hundred fifty-seven billion, five hundred forty-two million, five hundred fifty-three thousand, six hundred fifty".