61858970406 has 32 divisors (see below), whose sum is σ = 137483498880. Its totient is φ = 20616788808.

The previous prime is 61858970387. The next prime is 61858970423. The reversal of 61858970406 is 60407985816.

61858970406 is a `hidden beast` number, since 6 + 18 + 589 + 7 + 0 + 40 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

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, 331645 + ... + 483431.

It is an arithmetic number, because the mean of its divisors is an integer number (4296359340).

Almost surely, 2^61858970406 is an apocalyptic number.

61858970406 is an abundant number, since it is smaller than the sum of its proper divisors (75624528474).

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

61858970406 is a wasteful number, since it uses less digits than its factorization.

61858970406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159345 (or 159339 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 61858970406 in words is "sixty-one billion, eight hundred fifty-eight million, nine hundred seventy thousand, four hundred six".