129996701646 has 64 divisors (see below), whose sum is σ = 299426512896. Its totient is φ = 36856620000.

The previous prime is 129996701629. The next prime is 129996701663. The reversal of 129996701646 is 646107699921.

It is an interprime number because it is at equal distance from previous prime (129996701629) and next prime (129996701663).

It is a super-3 number, since 3×129996701646³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129996701646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2834131 + ... + 2879633.

It is an arithmetic number, because the mean of its divisors is an integer number (4678539264).

Almost surely, 2^129996701646 is an apocalyptic number.

129996701646 is an abundant number, since it is smaller than the sum of its proper divisors (169429811250).

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

129996701646 is a wasteful number, since it uses less digits than its factorization.

129996701646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46037.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 129996701646 in words is "one hundred twenty-nine billion, nine hundred ninety-six million, seven hundred one thousand, six hundred forty-six".