156049273440 has 768 divisors, whose sum is σ = 578013408000. Its totient is φ = 39773306880.

The previous prime is 156049273433. The next prime is 156049273451. The reversal of 156049273440 is 44372940651.

156049273440 is a `hidden beast` number, since 1 + 5 + 604 + 9 + 2 + 7 + 34 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1047310486 + ... + 1047310634.

It is an arithmetic number, because the mean of its divisors is an integer number (752621625).

Almost surely, 2^156049273440 is an apocalyptic number.

156049273440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156049273440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289006704000).

156049273440 is an abundant number, since it is smaller than the sum of its proper divisors (421964134560).

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

156049273440 is an equidigital number, since it uses as much as digits as its factorization.

156049273440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 156049273440 in words is "one hundred fifty-six billion, forty-nine million, two hundred seventy-three thousand, four hundred forty".