29772420971 has 2 divisors, whose sum is σ = 29772420972. Its totient is φ = 29772420970.

The previous prime is 29772420947. The next prime is 29772421009. The reversal of 29772420971 is 17902427792.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29772420971 - 2¹⁰ = 29772419947 is a prime.

It is a super-3 number, since 3×29772420971³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (29772420901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14886210485 + 14886210486.

It is an arithmetic number, because the mean of its divisors is an integer number (14886210486).

Almost surely, 2^29772420971 is an apocalyptic number.

29772420971 is a deficient number, since it is larger than the sum of its proper divisors (1).

29772420971 is an equidigital number, since it uses as much as digits as its factorization.

29772420971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 29772420971 in words is "twenty-nine billion, seven hundred seventy-two million, four hundred twenty thousand, nine hundred seventy-one".