151661561111616 has 28 divisors (see below), whose sum is σ = 401271213774992. Its totient is φ = 50553853703808.

The previous prime is 151661561111609. The next prime is 151661561111629. The reversal of 151661561111616 is 616111165166151.

It is a super-2 number, since 2×151661561111616² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394951981870 + ... + 394951982253.

Almost surely, 2^{151661561111616} is an apocalyptic number.

151661561111616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

151661561111616 is an abundant number, since it is smaller than the sum of its proper divisors (249609652663376).

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

151661561111616 is an equidigital number, since it uses as much as digits as its factorization.

151661561111616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789903964138 (or 789903964128 counting only the distinct ones).

The product of its digits is 194400, while the sum is 48.

The spelling of 151661561111616 in words is "one hundred fifty-one trillion, six hundred sixty-one billion, five hundred sixty-one million, one hundred eleven thousand, six hundred sixteen".