61404311146252 has 24 divisors (see below), whose sum is σ = 107579074050000. Its totient is φ = 30667438104576.

The previous prime is 61404311146193. The next prime is 61404311146267. The reversal of 61404311146252 is 25264111340416.

It is a super-2 number, since 2×61404311146252² (a number of 28 digits) contains 22 as substring.

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, 46538124 + ... + 47839372.

It is an arithmetic number, because the mean of its divisors is an integer number (4482461418750).

Almost surely, 2^{61404311146252} is an apocalyptic number.

It is an amenable number.

61404311146252 is a deficient number, since it is larger than the sum of its proper divisors (46174762903748).

61404311146252 is a wasteful number, since it uses less digits than its factorization.

61404311146252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314585 (or 1314583 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 61404311146252 its reverse (25264111340416), we get a palindrome (86668422486668).

The spelling of 61404311146252 in words is "sixty-one trillion, four hundred four billion, three hundred eleven million, one hundred forty-six thousand, two hundred fifty-two".