2151951475574 has 4 divisors (see below), whose sum is σ = 3227927213364. Its totient is φ = 1075975737786.

The previous prime is 2151951475517. The next prime is 2151951475669. The reversal of 2151951475574 is 4755741591512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537987868892 + ... + 537987868895.

It is an arithmetic number, because the mean of its divisors is an integer number (806981803341).

Almost surely, 2^{2151951475574} is an apocalyptic number.

2151951475574 is a deficient number, since it is larger than the sum of its proper divisors (1075975737790).

2151951475574 is a wasteful number, since it uses less digits than its factorization.

2151951475574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075975737789.

The product of its digits is 8820000, while the sum is 56.

The spelling of 2151951475574 in words is "two trillion, one hundred fifty-one billion, nine hundred fifty-one million, four hundred seventy-five thousand, five hundred seventy-four".