51613226511630 has 32 divisors (see below), whose sum is σ = 141567707003904. Its totient is φ = 11797308916896.

The previous prime is 51613226511541. The next prime is 51613226511641. The reversal of 51613226511630 is 3611562231615.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122888634342 + ... + 122888634761.

It is an arithmetic number, because the mean of its divisors is an integer number (4423990843872).

Almost surely, 2^{51613226511630} is an apocalyptic number.

51613226511630 is an abundant number, since it is smaller than the sum of its proper divisors (89954480492274).

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

51613226511630 is a wasteful number, since it uses less digits than its factorization.

51613226511630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245777269120.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 51613226511630 in words is "fifty-one trillion, six hundred thirteen billion, two hundred twenty-six million, five hundred eleven thousand, six hundred thirty".