61515279348 has 24 divisors (see below), whose sum is σ = 151978925952. Its totient is φ = 19298911104.

The previous prime is 61515279317. The next prime is 61515279373. The reversal of 61515279348 is 84397251516.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 61515279348.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150772540 + ... + 150772947.

It is an arithmetic number, because the mean of its divisors is an integer number (6332455248).

Almost surely, 2^61515279348 is an apocalyptic number.

61515279348 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61515279348 is an abundant number, since it is smaller than the sum of its proper divisors (90463646604).

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

61515279348 is a wasteful number, since it uses less digits than its factorization.

61515279348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301545511 (or 301545509 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The spelling of 61515279348 in words is "sixty-one billion, five hundred fifteen million, two hundred seventy-nine thousand, three hundred forty-eight".