61445690956 has 48 divisors (see below), whose sum is σ = 116800282368. Its totient is φ = 28115380800.

The previous prime is 61445690947. The next prime is 61445690983. The reversal of 61445690956 is 65909654416.

It is a junction number, because it is equal to n+sod(n) for n = 61445690897 and 61445690906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7973001 + ... + 7980703.

It is an arithmetic number, because the mean of its divisors is an integer number (2433339216).

Almost surely, 2^61445690956 is an apocalyptic number.

It is an amenable number.

61445690956 is a deficient number, since it is larger than the sum of its proper divisors (55354591412).

61445690956 is a wasteful number, since it uses less digits than its factorization.

61445690956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9022 (or 9020 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 61445690956 in words is "sixty-one billion, four hundred forty-five million, six hundred ninety thousand, nine hundred fifty-six".