77242437654 has 16 divisors (see below), whose sum is σ = 158252799600. Its totient is φ = 25119491840.

The previous prime is 77242437641. The next prime is 77242437659. The reversal of 77242437654 is 45673424277.

It is a junction number, because it is equal to n+sod(n) for n = 77242437597 and 77242437606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77242437659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156996579 + ... + 156997070.

It is an arithmetic number, because the mean of its divisors is an integer number (9890799975).

Almost surely, 2^77242437654 is an apocalyptic number.

77242437654 is an abundant number, since it is smaller than the sum of its proper divisors (81010361946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77242437654 is a wasteful number, since it uses less digits than its factorization.

77242437654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313993695.

The product of its digits is 7902720, while the sum is 51.

The spelling of 77242437654 in words is "seventy-seven billion, two hundred forty-two million, four hundred thirty-seven thousand, six hundred fifty-four".