61238399068 has 48 divisors (see below), whose sum is σ = 137921107968. Its totient is φ = 23089464000.

The previous prime is 61238399021. The next prime is 61238399069. The reversal of 61238399068 is 86099383216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61238399069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3197323 + ... + 3216418.

It is an arithmetic number, because the mean of its divisors is an integer number (2873356416).

Almost surely, 2^61238399068 is an apocalyptic number.

It is an amenable number.

61238399068 is an abundant number, since it is smaller than the sum of its proper divisors (76682708900).

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

61238399068 is a wasteful number, since it uses less digits than its factorization.

61238399068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413794 (or 6413792 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 61238399068 in words is "sixty-one billion, two hundred thirty-eight million, three hundred ninety-nine thousand, sixty-eight".