61351777476467 has 4 divisors (see below), whose sum is σ = 64960705563336. Its totient is φ = 57742849389600.

The previous prime is 61351777476443. The next prime is 61351777476547. The reversal of 61351777476467 is 76467477715316.

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

It is a cyclic number.

It is not a de Polignac number, because 61351777476467 - 2⁴² = 56953730965363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61351777476467.

It is not an unprimeable number, because it can be changed into a prime (61351777472467) 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, 1804464043409 + ... + 1804464043442.

It is an arithmetic number, because the mean of its divisors is an integer number (16240176390834).

Almost surely, 2^{61351777476467} is an apocalyptic number.

61351777476467 is a deficient number, since it is larger than the sum of its proper divisors (3608928086869).

61351777476467 is a wasteful number, since it uses less digits than its factorization.

61351777476467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608928086868.

The product of its digits is 871274880, while the sum is 71.

The spelling of 61351777476467 in words is "sixty-one trillion, three hundred fifty-one billion, seven hundred seventy-seven million, four hundred seventy-six thousand, four hundred sixty-seven".