28077411461 has 4 divisors (see below), whose sum is σ = 30629903424. Its totient is φ = 25524919500.

The previous prime is 28077411449. The next prime is 28077411503. The reversal of 28077411461 is 16411477082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28077411461 - 2²⁶ = 28010302597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28077411421) 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, 1276245965 + ... + 1276245986.

It is an arithmetic number, because the mean of its divisors is an integer number (7657475856).

Almost surely, 2^28077411461 is an apocalyptic number.

It is an amenable number.

28077411461 is a deficient number, since it is larger than the sum of its proper divisors (2552491963).

28077411461 is a wasteful number, since it uses less digits than its factorization.

28077411461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552491962.

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 28077411461 in words is "twenty-eight billion, seventy-seven million, four hundred eleven thousand, four hundred sixty-one".