61372686550 has 96 divisors (see below), whose sum is σ = 132468664320. Its totient is φ = 20719670400.

The previous prime is 61372686547. The next prime is 61372686553. The reversal of 61372686550 is 5568627316.

It is an interprime number because it is at equal distance from previous prime (61372686547) and next prime (61372686553).

It is a junction number, because it is equal to n+sod(n) for n = 61372686494 and 61372686503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61372686553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10974255 + ... + 10979845.

It is an arithmetic number, because the mean of its divisors is an integer number (1379881920).

Almost surely, 2^61372686550 is an apocalyptic number.

61372686550 is an abundant number, since it is smaller than the sum of its proper divisors (71095977770).

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

61372686550 is a wasteful number, since it uses less digits than its factorization.

61372686550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086 (or 6081 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 61372686550 in words is "sixty-one billion, three hundred seventy-two million, six hundred eighty-six thousand, five hundred fifty".