61621453562 has 32 divisors (see below), whose sum is σ = 105533124480. Its totient is φ = 26802040320.

The previous prime is 61621453547. The next prime is 61621453591. The reversal of 61621453562 is 26535412616.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1136798 + ... + 1189769.

It is an arithmetic number, because the mean of its divisors is an integer number (3297910140).

Almost surely, 2^61621453562 is an apocalyptic number.

61621453562 is a deficient number, since it is larger than the sum of its proper divisors (43911670918).

61621453562 is a wasteful number, since it uses less digits than its factorization.

61621453562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326646.

The product of its digits is 259200, while the sum is 41.

The spelling of 61621453562 in words is "sixty-one billion, six hundred twenty-one million, four hundred fifty-three thousand, five hundred sixty-two".