61503172746 has 32 divisors (see below), whose sum is σ = 125772840960. Its totient is φ = 20045014704.

The previous prime is 61503172739. The next prime is 61503172751. The reversal of 61503172746 is 64727130516.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61503172698 and 61503172707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581050 + ... + 678693.

It is an arithmetic number, because the mean of its divisors is an integer number (3930401280).

Almost surely, 2^61503172746 is an apocalyptic number.

61503172746 is an abundant number, since it is smaller than the sum of its proper divisors (64269668214).

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

61503172746 is a wasteful number, since it uses less digits than its factorization.

61503172746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259930.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 61503172746 in words is "sixty-one billion, five hundred three million, one hundred seventy-two thousand, seven hundred forty-six".