61672784508 has 24 divisors (see below), whose sum is σ = 159892404560. Its totient is φ = 20557594800.

The previous prime is 61672784497. The next prime is 61672784521. The reversal of 61672784508 is 80548727616.

61672784508 is a `hidden beast` number, since 6 + 1 + 67 + 2 + 78 + 4 + 508 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 285522043 + ... + 285522258.

Almost surely, 2^61672784508 is an apocalyptic number.

It is an amenable number.

61672784508 is an abundant number, since it is smaller than the sum of its proper divisors (98219620052).

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

61672784508 is a wasteful number, since it uses less digits than its factorization.

61672784508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571044314 (or 571044306 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 61672784508 in words is "sixty-one billion, six hundred seventy-two million, seven hundred eighty-four thousand, five hundred eight".