61409350844 has 12 divisors (see below), whose sum is σ = 107699482968. Its totient is φ = 30638070000.

The previous prime is 61409350829. The next prime is 61409350907. The reversal of 61409350844 is 44805390416.

It is a super-2 number, since 2×61409350844² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61409350795 and 61409350804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16649282 + ... + 16652969.

It is an arithmetic number, because the mean of its divisors is an integer number (8974956914).

Almost surely, 2^61409350844 is an apocalyptic number.

It is an amenable number.

61409350844 is a deficient number, since it is larger than the sum of its proper divisors (46290132124).

61409350844 is a wasteful number, since it uses less digits than its factorization.

61409350844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33302716 (or 33302714 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 61409350844 in words is "sixty-one billion, four hundred nine million, three hundred fifty thousand, eight hundred forty-four".