102145542420550 has 24 divisors (see below), whose sum is σ = 189998855741376. Its totient is φ = 40856464959840.

The previous prime is 102145542420511. The next prime is 102145542420583. The reversal of 102145542420550 is 55024245541201.

It is a congruent number.

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, 42622197 + ... + 44954896.

It is an arithmetic number, because the mean of its divisors is an integer number (7916618989224).

Almost surely, 2^{102145542420550} is an apocalyptic number.

102145542420550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102145542420550 is a deficient number, since it is larger than the sum of its proper divisors (87853313320826).

102145542420550 is a wasteful number, since it uses less digits than its factorization.

102145542420550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87600432 (or 87600427 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 40.

Adding to 102145542420550 its reverse (55024245541201), we get a palindrome (157169787961751).

The spelling of 102145542420550 in words is "one hundred two trillion, one hundred forty-five billion, five hundred forty-two million, four hundred twenty thousand, five hundred fifty".