40215421535154 has 32 divisors (see below), whose sum is σ = 83219230923840. Its totient is φ = 12940574875200.

The previous prime is 40215421535137. The next prime is 40215421535273. The reversal of 40215421535154 is 45153512451204.

It is a super-3 number, since 3×40215421535154³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19735152 + ... + 21677339.

It is an arithmetic number, because the mean of its divisors is an integer number (2600600966370).

Almost surely, 2^{40215421535154} is an apocalyptic number.

40215421535154 is an abundant number, since it is smaller than the sum of its proper divisors (43003809388686).

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

40215421535154 is a wasteful number, since it uses less digits than its factorization.

40215421535154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41418106.

The product of its (nonzero) digits is 480000, while the sum is 42.

Adding to 40215421535154 its reverse (45153512451204), we get a palindrome (85368933986358).

The spelling of 40215421535154 in words is "forty trillion, two hundred fifteen billion, four hundred twenty-one million, five hundred thirty-five thousand, one hundred fifty-four".