61421216600 has 48 divisors (see below), whose sum is σ = 144114511200. Its totient is φ = 24343079040.

The previous prime is 61421216551. The next prime is 61421216621. The reversal of 61421216600 is 661212416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1386944 + ... + 1430543.

It is an arithmetic number, because the mean of its divisors is an integer number (3002385650).

Almost surely, 2^61421216600 is an apocalyptic number.

It is an amenable number.

61421216600 is an abundant number, since it is smaller than the sum of its proper divisors (82693294600).

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

61421216600 is a wasteful number, since it uses less digits than its factorization.

61421216600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817612 (or 2817603 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 61421216600 in words is "sixty-one billion, four hundred twenty-one million, two hundred sixteen thousand, six hundred".