149220778416 has 80 divisors (see below), whose sum is σ = 408223273824. Its totient is φ = 46807416832.

The previous prime is 149220778391. The next prime is 149220778471. The reversal of 149220778416 is 614877022941.

It is a super-2 number, since 2×149220778416² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10190236 + ... + 10204868.

Almost surely, 2^149220778416 is an apocalyptic number.

149220778416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

149220778416 is an abundant number, since it is smaller than the sum of its proper divisors (259002495408).

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

149220778416 is a wasteful number, since it uses less digits than its factorization.

149220778416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27158 (or 27152 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 149220778416 in words is "one hundred forty-nine billion, two hundred twenty million, seven hundred seventy-eight thousand, four hundred sixteen".