77421535513050 has 24 divisors (see below), whose sum is σ = 192005408072736. Its totient is φ = 20645742803440.

The previous prime is 77421535513037. The next prime is 77421535513111. The reversal of 77421535513050 is 5031553512477.

It is a super-2 number, since 2×77421535513050² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258071784894 + ... + 258071785193.

It is an arithmetic number, because the mean of its divisors is an integer number (8000225336364).

Almost surely, 2^{77421535513050} is an apocalyptic number.

77421535513050 is an abundant number, since it is smaller than the sum of its proper divisors (114583872559686).

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

77421535513050 is a wasteful number, since it uses less digits than its factorization.

77421535513050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516143570102 (or 516143570097 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 48.

The spelling of 77421535513050 in words is "seventy-seven trillion, four hundred twenty-one billion, five hundred thirty-five million, five hundred thirteen thousand, fifty".