61401044016 has 120 divisors (see below), whose sum is σ = 187591354496. Its totient is φ = 18633784320.

The previous prime is 61401043997. The next prime is 61401044041. The reversal of 61401044016 is 61044010416.

61401044016 is a `hidden beast` number, since 614 + 0 + 1 + 0 + 4 + 40 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88000 + ... + 361311.

Almost surely, 2^61401044016 is an apocalyptic number.

It is an amenable number.

61401044016 is an abundant number, since it is smaller than the sum of its proper divisors (126190310480).

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

61401044016 is a wasteful number, since it uses less digits than its factorization.

61401044016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449411 (or 449402 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 61401044016 in words is "sixty-one billion, four hundred one million, forty-four thousand, sixteen".