29772420955 has 32 divisors (see below), whose sum is σ = 38158884864. Its totient is φ = 22247613696.

The previous prime is 29772420947. The next prime is 29772420971. The reversal of 29772420955 is 55902427792.

It is a happy number.

It is not a de Polignac number, because 29772420955 - 2³ = 29772420947 is a prime.

It is a super-2 number, since 2×29772420955² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 2496567 + ... + 2508463.

It is an arithmetic number, because the mean of its divisors is an integer number (1192465152).

Almost surely, 2^29772420955 is an apocalyptic number.

29772420955 is a deficient number, since it is larger than the sum of its proper divisors (8386463909).

29772420955 is a wasteful number, since it uses less digits than its factorization.

29772420955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12435.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 29772420955 in words is "twenty-nine billion, seven hundred seventy-two million, four hundred twenty thousand, nine hundred fifty-five".