16157780944 has 20 divisors (see below), whose sum is σ = 31330216960. Its totient is φ = 8072563680.

The previous prime is 16157780941. The next prime is 16157780987. The reversal of 16157780944 is 44908775161.

It is a happy number.

It is a super-2 number, since 2×16157780944² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16157780891 and 16157780900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16157780941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374322 + ... + 415249.

It is an arithmetic number, because the mean of its divisors is an integer number (1566510848).

Almost surely, 2^16157780944 is an apocalyptic number.

It is an amenable number.

16157780944 is a deficient number, since it is larger than the sum of its proper divisors (15172436016).

16157780944 is a wasteful number, since it uses less digits than its factorization.

16157780944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790858 (or 790852 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 16157780944 in words is "sixteen billion, one hundred fifty-seven million, seven hundred eighty thousand, nine hundred forty-four".