61323451012 has 24 divisors (see below), whose sum is σ = 108332282520. Its totient is φ = 30371535360.

The previous prime is 61323451001. The next prime is 61323451043. The reversal of 61323451012 is 21015432316.

It can be written as a sum of positive squares in 4 ways, for example, as 7283939716 + 54039511296 = 85346^2 + 232464^2 .

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, 1621098 + ... + 1658494.

It is an arithmetic number, because the mean of its divisors is an integer number (4513845105).

Almost surely, 2^61323451012 is an apocalyptic number.

It is an amenable number.

61323451012 is a deficient number, since it is larger than the sum of its proper divisors (47008831508).

61323451012 is a wasteful number, since it uses less digits than its factorization.

61323451012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41271 (or 41269 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 61323451012 its reverse (21015432316), we get a palindrome (82338883328).

The spelling of 61323451012 in words is "sixty-one billion, three hundred twenty-three million, four hundred fifty-one thousand, twelve".