77554245542 has 8 divisors (see below), whose sum is σ = 118303086600. Its totient is φ = 38119883344.

The previous prime is 77554245539. The next prime is 77554245547. The reversal of 77554245542 is 24554245577.

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

It is a super-2 number, since 2×77554245542² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77554245547) 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, 328619567 + ... + 328619802.

It is an arithmetic number, because the mean of its divisors is an integer number (14787885825).

Almost surely, 2^77554245542 is an apocalyptic number.

77554245542 is a deficient number, since it is larger than the sum of its proper divisors (40748841058).

77554245542 is a wasteful number, since it uses less digits than its factorization.

77554245542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657239430.

The product of its digits is 7840000, while the sum is 50.

The spelling of 77554245542 in words is "seventy-seven billion, five hundred fifty-four million, two hundred forty-five thousand, five hundred forty-two".