61223301776 has 40 divisors (see below), whose sum is σ = 145994030784. Its totient is φ = 24220206720.

The previous prime is 61223301751. The next prime is 61223301809. The reversal of 61223301776 is 67710332216.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21023030 + ... + 21025941.

Almost surely, 2^61223301776 is an apocalyptic number.

It is an amenable number.

61223301776 is an abundant number, since it is smaller than the sum of its proper divisors (84770729008).

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

61223301776 is a wasteful number, since it uses less digits than its factorization.

61223301776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42048999 (or 42048993 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 61223301776 in words is "sixty-one billion, two hundred twenty-three million, three hundred one thousand, seven hundred seventy-six".