83154428644 has 72 divisors (see below), whose sum is σ = 183936318720. Its totient is φ = 32672808000.

The previous prime is 83154428641. The next prime is 83154428653. The reversal of 83154428644 is 44682445138.

It is a super-2 number, since 2×83154428644² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (83154428641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244707 + ... + 475594.

Almost surely, 2^83154428644 is an apocalyptic number.

It is an amenable number.

83154428644 is an abundant number, since it is smaller than the sum of its proper divisors (100781890076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83154428644 is a wasteful number, since it uses less digits than its factorization.

83154428644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720369 (or 720360 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 49.

The spelling of 83154428644 in words is "eighty-three billion, one hundred fifty-four million, four hundred twenty-eight thousand, six hundred forty-four".