61451400061446 has 16 divisors (see below), whose sum is σ = 122903288329008. Its totient is φ = 20483718652800.

The previous prime is 61451400061439. The next prime is 61451400061481. The reversal of 61451400061446 is 64416000415416.

It is a super-2 number, since 2×61451400061446² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61451400061398 and 61451400061407.

It is a congruent number.

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, 18695335 + ... + 21735186.

It is an arithmetic number, because the mean of its divisors is an integer number (7681455520563).

Almost surely, 2^{61451400061446} is an apocalyptic number.

61451400061446 is an abundant number, since it is smaller than the sum of its proper divisors (61451888267562).

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

61451400061446 is a wasteful number, since it uses less digits than its factorization.

61451400061446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40683847.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 61451400061446 in words is "sixty-one trillion, four hundred fifty-one billion, four hundred million, sixty-one thousand, four hundred forty-six".