20629969942 has 8 divisors (see below), whose sum is σ = 30951471600. Its totient is φ = 10312812744.

The previous prime is 20629969939. The next prime is 20629969951. The reversal of 20629969942 is 24996992602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074217 + ... + 1093252.

It is an arithmetic number, because the mean of its divisors is an integer number (3868933950).

Almost surely, 2^20629969942 is an apocalyptic number.

20629969942 is a deficient number, since it is larger than the sum of its proper divisors (10321501658).

20629969942 is a wasteful number, since it uses less digits than its factorization.

20629969942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172230.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 20629969942 in words is "twenty billion, six hundred twenty-nine million, nine hundred sixty-nine thousand, nine hundred forty-two".