129772051619 has 8 divisors (see below), whose sum is σ = 148469206368. Its totient is φ = 111114469440.

The previous prime is 129772051613. The next prime is 129772051621. The reversal of 129772051619 is 916150277921.

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

It is a cyclic number.

It is not a de Polignac number, because 129772051619 - 2¹⁶ = 129771986083 is a prime.

It is a super-2 number, since 2×129772051619² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129772051613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9886112 + ... + 9899229.

It is an arithmetic number, because the mean of its divisors is an integer number (18558650796).

Almost surely, 2^129772051619 is an apocalyptic number.

129772051619 is a deficient number, since it is larger than the sum of its proper divisors (18697154749).

129772051619 is an equidigital number, since it uses as much as digits as its factorization.

129772051619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19786285.

The product of its (nonzero) digits is 476280, while the sum is 50.

The spelling of 129772051619 in words is "one hundred twenty-nine billion, seven hundred seventy-two million, fifty-one thousand, six hundred nineteen".