77135744154 has 64 divisors (see below), whose sum is σ = 181888229376. Its totient is φ = 21346887744.

The previous prime is 77135744149. The next prime is 77135744159. The reversal of 77135744154 is 45144753177.

It is an interprime number because it is at equal distance from previous prime (77135744149) and next prime (77135744159).

It is not an unprimeable number, because it can be changed into a prime (77135744159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235249 + ... + 457835.

It is an arithmetic number, because the mean of its divisors is an integer number (2842003584).

Almost surely, 2^77135744154 is an apocalyptic number.

77135744154 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 77135744154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90944114688).

77135744154 is an abundant number, since it is smaller than the sum of its proper divisors (104752485222).

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

77135744154 is a wasteful number, since it uses less digits than its factorization.

77135744154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222859.

The product of its digits is 1646400, while the sum is 48.

The spelling of 77135744154 in words is "seventy-seven billion, one hundred thirty-five million, seven hundred forty-four thousand, one hundred fifty-four".