101551421532 has 24 divisors (see below), whose sum is σ = 258494527872. Its totient is φ = 30773158000.

The previous prime is 101551421509. The next prime is 101551421533. The reversal of 101551421532 is 235124155101.

It is a self number, because there is not a number n which added to its sum of digits gives 101551421532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101551421533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384664344 + ... + 384664607.

It is an arithmetic number, because the mean of its divisors is an integer number (10770605328).

Almost surely, 2^101551421532 is an apocalyptic number.

101551421532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101551421532 is an abundant number, since it is smaller than the sum of its proper divisors (156943106340).

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

101551421532 is a wasteful number, since it uses less digits than its factorization.

101551421532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769328969 (or 769328967 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 101551421532 its reverse (235124155101), we get a palindrome (336675576633).

The spelling of 101551421532 in words is "one hundred one billion, five hundred fifty-one million, four hundred twenty-one thousand, five hundred thirty-two".