51955191958 has 8 divisors (see below), whose sum is σ = 77934193128. Its totient is φ = 25977127584.

The previous prime is 51955191943. The next prime is 51955192031. The reversal of 51955191958 is 85919155915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73491 + ... + 330622.

It is an arithmetic number, because the mean of its divisors is an integer number (9741774141).

Almost surely, 2^51955191958 is an apocalyptic number.

51955191958 is a deficient number, since it is larger than the sum of its proper divisors (25979001170).

51955191958 is a wasteful number, since it uses less digits than its factorization.

51955191958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468398.

The product of its digits is 3645000, while the sum is 58.

The spelling of 51955191958 in words is "fifty-one billion, nine hundred fifty-five million, one hundred ninety-one thousand, nine hundred fifty-eight".