50720129429697 has 64 divisors (see below), whose sum is σ = 93048517416960. Its totient is φ = 26589342906432.

The previous prime is 50720129429647. The next prime is 50720129429699. The reversal of 50720129429697 is 79692492102705.

50720129429697 is a `hidden beast` number, since 5 + 0 + 7 + 20 + 129 + 429 + 69 + 7 = 666.

It is not a de Polignac number, because 50720129429697 - 2³² = 50715834462401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (50720129429699) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62921943 + ... + 63722924.

It is an arithmetic number, because the mean of its divisors is an integer number (1453883084640).

Almost surely, 2^{50720129429697} is an apocalyptic number.

It is an amenable number.

50720129429697 is a deficient number, since it is larger than the sum of its proper divisors (42328387987263).

50720129429697 is a wasteful number, since it uses less digits than its factorization.

50720129429697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126645059 (or 126645053 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 50720129429697 in words is "fifty trillion, seven hundred twenty billion, one hundred twenty-nine million, four hundred twenty-nine thousand, six hundred ninety-seven".