61373404476455 has 4 divisors (see below), whose sum is σ = 73648085371752. Its totient is φ = 49098723581160.

The previous prime is 61373404476451. The next prime is 61373404476511. The reversal of 61373404476455 is 55467440437316.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61373404476455 - 2² = 61373404476451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61373404476394 and 61373404476403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61373404476451) 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, 6137340447641 + ... + 6137340447650.

It is an arithmetic number, because the mean of its divisors is an integer number (18412021342938).

Almost surely, 2^{61373404476455} is an apocalyptic number.

61373404476455 is a deficient number, since it is larger than the sum of its proper divisors (12274680895297).

61373404476455 is a wasteful number, since it uses less digits than its factorization.

61373404476455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12274680895296.

The product of its (nonzero) digits is 101606400, while the sum is 59.

The spelling of 61373404476455 in words is "sixty-one trillion, three hundred seventy-three billion, four hundred four million, four hundred seventy-six thousand, four hundred fifty-five".