8121415401077 has 4 divisors (see below), whose sum is σ = 8859725892096. Its totient is φ = 7383104910060.

The previous prime is 8121415401049. The next prime is 8121415401119. The reversal of 8121415401077 is 7701045141218.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8121415401077 - 2¹⁰ = 8121415400053 is a prime.

It is a super-3 number, since 3×8121415401077³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121415401007) 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, 369155245493 + ... + 369155245514.

It is an arithmetic number, because the mean of its divisors is an integer number (2214931473024).

Almost surely, 2^{8121415401077} is an apocalyptic number.

It is an amenable number.

8121415401077 is a deficient number, since it is larger than the sum of its proper divisors (738310491019).

8121415401077 is a wasteful number, since it uses less digits than its factorization.

8121415401077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738310491018.

The product of its (nonzero) digits is 62720, while the sum is 41.

The spelling of 8121415401077 in words is "eight trillion, one hundred twenty-one billion, four hundred fifteen million, four hundred one thousand, seventy-seven".