51542237946 has 16 divisors (see below), whose sum is σ = 105870543264. Its totient is φ = 16716401424.

The previous prime is 51542237917. The next prime is 51542237951. The reversal of 51542237946 is 64973224515.

It is a junction number, because it is equal to n+sod(n) for n = 51542237895 and 51542237904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116085900 + ... + 116086343.

It is an arithmetic number, because the mean of its divisors is an integer number (6616908954).

Almost surely, 2^51542237946 is an apocalyptic number.

51542237946 is an abundant number, since it is smaller than the sum of its proper divisors (54328305318).

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

51542237946 is a wasteful number, since it uses less digits than its factorization.

51542237946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232172285.

The product of its digits is 1814400, while the sum is 48.

The spelling of 51542237946 in words is "fifty-one billion, five hundred forty-two million, two hundred thirty-seven thousand, nine hundred forty-six".