61290447571946 has 8 divisors (see below), whose sum is σ = 92397659656800. Its totient is φ = 30491227686348.

The previous prime is 61290447571943. The next prime is 61290447571961. The reversal of 61290447571946 is 64917574409216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×61290447571946² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61290447571943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76998049316 + ... + 76998050111.

It is an arithmetic number, because the mean of its divisors is an integer number (11549707457100).

Almost surely, 2^{61290447571946} is an apocalyptic number.

61290447571946 is a deficient number, since it is larger than the sum of its proper divisors (31107212084854).

61290447571946 is a wasteful number, since it uses less digits than its factorization.

61290447571946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153996099628.

The product of its (nonzero) digits is 91445760, while the sum is 65.

The spelling of 61290447571946 in words is "sixty-one trillion, two hundred ninety billion, four hundred forty-seven million, five hundred seventy-one thousand, nine hundred forty-six".