20157010625534 has 4 divisors (see below), whose sum is σ = 30235515938304. Its totient is φ = 10078505312766.

The previous prime is 20157010625509. The next prime is 20157010625621. The reversal of 20157010625534 is 43552601075102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20157010625491 and 20157010625500.

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, 5039252656382 + ... + 5039252656385.

It is an arithmetic number, because the mean of its divisors is an integer number (7558878984576).

Almost surely, 2^{20157010625534} is an apocalyptic number.

20157010625534 is a deficient number, since it is larger than the sum of its proper divisors (10078505312770).

20157010625534 is a wasteful number, since it uses less digits than its factorization.

20157010625534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078505312769.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 20157010625534 in words is "twenty trillion, one hundred fifty-seven billion, ten million, six hundred twenty-five thousand, five hundred thirty-four".