102147553620 has 144 divisors (see below), whose sum is σ = 355459104000. Its totient is φ = 23259161088.

The previous prime is 102147553619. The next prime is 102147553637. The reversal of 102147553620 is 26355741201.

102147553620 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 47 + 553 + 62 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177256 + ... + 485504.

It is an arithmetic number, because the mean of its divisors is an integer number (2468466000).

Almost surely, 2^102147553620 is an apocalyptic number.

102147553620 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 102147553620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177729552000).

102147553620 is an abundant number, since it is smaller than the sum of its proper divisors (253311550380).

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

102147553620 is a wasteful number, since it uses less digits than its factorization.

102147553620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308534 (or 308529 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 102147553620 in words is "one hundred two billion, one hundred forty-seven million, five hundred fifty-three thousand, six hundred twenty".