61264020984 has 32 divisors (see below), whose sum is σ = 153197394000. Its totient is φ = 20416361472.

The previous prime is 61264020967. The next prime is 61264020989. The reversal of 61264020984 is 48902046216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61264020989) 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, 210019 + ... + 408210.

Almost surely, 2^61264020984 is an apocalyptic number.

It is an amenable number.

61264020984 is an abundant number, since it is smaller than the sum of its proper divisors (91933373016).

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

61264020984 is a wasteful number, since it uses less digits than its factorization.

61264020984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622367 (or 622363 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 61264020984 in words is "sixty-one billion, two hundred sixty-four million, twenty thousand, nine hundred eighty-four".