139564763856 has 280 divisors, whose sum is σ = 479327892480. Its totient is φ = 38499971328.

The previous prime is 139564763839. The next prime is 139564763911. The reversal of 139564763856 is 658367465931.

139564763856 is a `hidden beast` number, since 1 + 3 + 9 + 564 + 7 + 63 + 8 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 139564763793 and 139564763802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2338321 + ... + 2397263.

Almost surely, 2^139564763856 is an apocalyptic number.

139564763856 is a gapful number since it is divisible by the number (16) 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 139564763856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239663946240).

139564763856 is an abundant number, since it is smaller than the sum of its proper divisors (339763128624).

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

139564763856 is an equidigital number, since it uses as much as digits as its factorization.

139564763856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59005 (or 58984 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 139564763856 in words is "one hundred thirty-nine billion, five hundred sixty-four million, seven hundred sixty-three thousand, eight hundred fifty-six".