51086311161380 has 192 divisors, whose sum is σ = 132387362150400. Its totient is φ = 16316646635520.

The previous prime is 51086311161337. The next prime is 51086311161451. The reversal of 51086311161380 is 8316111368015.

It is a super-2 number, since 2×51086311161380² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 604040 + ... + 10126079.

It is an arithmetic number, because the mean of its divisors is an integer number (689517511200).

Almost surely, 2^{51086311161380} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51086311161380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66193681075200).

51086311161380 is an abundant number, since it is smaller than the sum of its proper divisors (81301050989020).

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

51086311161380 is a wasteful number, since it uses less digits than its factorization.

51086311161380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10730242 (or 10730240 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 51086311161380 in words is "fifty-one trillion, eighty-six billion, three hundred eleven million, one hundred sixty-one thousand, three hundred eighty".