61553146147451 has 32 divisors (see below), whose sum is σ = 72289002728448. Its totient is φ = 51313526046720.

The previous prime is 61553146147429. The next prime is 61553146147453. The reversal of 61553146147451 is 15474164135516.

It is a de Polignac number, because none of the positive numbers 2^k-61553146147451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61553146147393 and 61553146147402.

It is not an unprimeable number, because it can be changed into a prime (61553146147453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212819306 + ... + 213108336.

It is an arithmetic number, because the mean of its divisors is an integer number (2259031335264).

Almost surely, 2^{61553146147451} is an apocalyptic number.

61553146147451 is a deficient number, since it is larger than the sum of its proper divisors (10735856580997).

61553146147451 is a wasteful number, since it uses less digits than its factorization.

61553146147451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292091.

The product of its digits is 6048000, while the sum is 53.

The spelling of 61553146147451 in words is "sixty-one trillion, five hundred fifty-three billion, one hundred forty-six million, one hundred forty-seven thousand, four hundred fifty-one".