77207548836409 has 8 divisors (see below), whose sum is σ = 81223604856000. Its totient is φ = 73281741266832.

The previous prime is 77207548836377. The next prime is 77207548836419. The reversal of 77207548836409 is 90463884570277.

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

It is not a de Polignac number, because 77207548836409 - 2⁵ = 77207548836377 is a prime.

It is a super-2 number, since 2×77207548836409² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77207548836419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22562110749 + ... + 22562114170.

It is an arithmetic number, because the mean of its divisors is an integer number (10152950607000).

Almost surely, 2^{77207548836409} is an apocalyptic number.

It is an amenable number.

77207548836409 is a deficient number, since it is larger than the sum of its proper divisors (4016056019591).

77207548836409 is a wasteful number, since it uses less digits than its factorization.

77207548836409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45124225007.

The product of its (nonzero) digits is 568995840, while the sum is 70.

The spelling of 77207548836409 in words is "seventy-seven trillion, two hundred seven billion, five hundred forty-eight million, eight hundred thirty-six thousand, four hundred nine".