77026135440025 has 12 divisors (see below), whose sum is σ = 98093824377772. Its totient is φ = 59955478395840.

The previous prime is 77026135440013. The next prime is 77026135440029. The reversal of 77026135440025 is 52004453162077.

It can be written as a sum of positive squares in 6 ways, for example, as 6905290795264 + 70120844644761 = 2627792^2 + 8373819^2 .

It is not a de Polignac number, because 77026135440025 - 2²³ = 77026127051417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77026135440029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41635747962 + ... + 41635749811.

Almost surely, 2^{77026135440025} is an apocalyptic number.

It is an amenable number.

77026135440025 is a deficient number, since it is larger than the sum of its proper divisors (21067688937747).

77026135440025 is a wasteful number, since it uses less digits than its factorization.

77026135440025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83271497820 (or 83271497815 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 77026135440025 in words is "seventy-seven trillion, twenty-six billion, one hundred thirty-five million, four hundred forty thousand, twenty-five".