61970408985 has 16 divisors (see below), whose sum is σ = 100833209280. Its totient is φ = 32490699840.

The previous prime is 61970408977. The next prime is 61970408993. The reversal of 61970408985 is 58980407916.

It is an interprime number because it is at equal distance from previous prime (61970408977) and next prime (61970408993).

It is not a de Polignac number, because 61970408985 - 2³ = 61970408977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35010646 + ... + 35012415.

It is an arithmetic number, because the mean of its divisors is an integer number (6302075580).

Almost surely, 2^61970408985 is an apocalyptic number.

It is an amenable number.

61970408985 is a deficient number, since it is larger than the sum of its proper divisors (38862800295).

61970408985 is a wasteful number, since it uses less digits than its factorization.

61970408985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70023128.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 61970408985 in words is "sixty-one billion, nine hundred seventy million, four hundred eight thousand, nine hundred eighty-five".