51137961445 has 8 divisors (see below), whose sum is σ = 64595319840. Its totient is φ = 38757191760.

The previous prime is 51137961437. The next prime is 51137961481. The reversal of 51137961445 is 54416973115.

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

It is not a de Polignac number, because 51137961445 - 2³ = 51137961437 is a prime.

It is a super-2 number, since 2×51137961445² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51137961395 and 51137961404.

It is a congruent number.

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, 269147071 + ... + 269147260.

It is an arithmetic number, because the mean of its divisors is an integer number (8074414980).

Almost surely, 2^51137961445 is an apocalyptic number.

It is an amenable number.

51137961445 is a deficient number, since it is larger than the sum of its proper divisors (13457358395).

51137961445 is a wasteful number, since it uses less digits than its factorization.

51137961445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538294355.

The product of its digits is 453600, while the sum is 46.

The spelling of 51137961445 in words is "fifty-one billion, one hundred thirty-seven million, nine hundred sixty-one thousand, four hundred forty-five".